"My sun(shine)" is an English equivalent of "Mi sole."
Specifically, the possessive adjective "mi"* means "my." The masculine noun "sole" means "sun, sunlight, sunshine." The pronunciation is "mee SOH-leh."
*The possessive adjective actually is "mio." But the vowel "-o" drops before a noun that begins with a consonant.
Mi pare in Italian means "It seems to me" in English.
Mi trovavo in Italian means "I was finding myself" in English.
"Sunlight" in English is luce del sole in Italian.
Bella giornata di sole! in Italian means "Beautiful day of sun!" in English.
Mi manchi molto! in Italian means "I miss you a lot!" in English.
Mi chiamano Panciula in Italian means "They call me Panciula" in English.
"I like you!" in English is Mi piaci! in Italian.
"I will miss you!" in English is Mi mancherai! in Italian.
"Will you marry me?" in English is Mi sposerai? in Italian.
"You complete me!" in English is Mi completi! in Italian.
"I relax" in English is Mi rilasso in Italian.
"How about you?" in English is Cosa mi dici di te? in Italian.